Introduction
Product Definition
The A48 TDS Water Quality Testing Pen is a portable water quality testing tool that helps users quickly understand water purity by measuring the total dissolved solids (TDS) content in water. The product features a titanium alloy water probe and a high-definition LCD display, offering high accuracy, low power consumption, lightweight design, and ease of use. It is suitable for household and various daily water use scenarios. The product structure includes a battery compartment, battery, LCD display, power button, titanium alloy water probe, and pen cap. The pen cap can be used to hold a water sample for convenient testing. With its compact size and simple operation, the device quickly reads the total dissolved solids in water.
Product Features
- High-precision detection: measurement error within ±5%, measuring range 0–9990 ppm
- Titanium alloy probe: high measurement accuracy, rust-proof and corrosion-resistant, durable
- High-definition LCD display: waterproof design, clear readings
- Long battery life: 1 CR1225 button cell battery supports about 1000 hours of use
- Lightweight and portable: dimensions 150×17×10.8 mm, net weight 20 g, pen-shaped design
- Convenient sampling: the pen cap can be used to hold water
Core Specifications
- Model: A48
- Function: detects water purity (TDS value)
- Error range: ±5%
- Measuring range: 0–9990 ppm
- Battery: CR1225 (1 × 3V high-capacity button cell, supports about 1000 hours of continuous use)
- Dimensions: 150 × 17 × 10.8 mm
- Net weight: 20 g
- Display: waterproof design, clear display
- Probe: titanium alloy water probe
- Pen cap: can be used to hold water
TDS Value Reference Standard
- 0–50: high purity
- 50–100: relatively high purity
- 100–300: average purity
- 300–600: scale formation may occur
- 600–1000: rough taste
- Above 1000: may affect health
Note: Generally, the lower the TDS value, the fewer dissolved solids in the water and the purer the water. The higher the TDS value, the more dissolved solids in the water, but it cannot determine whether they are harmful. According to the Standards for Drinking Water Quality, a qualified TDS value is ≤1000 mg/L. TDS is only one indicator of water quality; water quality cannot be judged by TDS value alone.
Application Scenarios
- Daily drinking water testing
- Water tank quality testing
- Fish tank water testing
- Swimming pool water testing
- Water purifier quality testing
FAQ
Q: What is the measuring range of the A48 TDS Water Quality Testing Pen?
A: The measuring range is 0–9990 ppm.
Q: What is the error range of the A48 TDS Water Quality Testing Pen?
A: The error range is ±5%.
Q: What battery does the A48 TDS Water Quality Testing Pen use?
A: It uses a CR1225 button cell battery. One 3V high-capacity battery supports about 1000 hours of use. If the product will not be used for a long time, we recommend removing the battery.
Q: What is the function of the A48 pen cap?
A: The pen cap can be used to hold water, making it convenient to test water quality outdoors or when direct sampling is not easy.
Q: Why does the A48 use a titanium alloy probe?
A: The titanium alloy water probe provides high measurement accuracy and is rust-proof and corrosion-resistant for greater durability.
Q: Is a lower TDS value always better?
A: Generally, the lower the TDS value, the fewer dissolved solids in the water and the purer the water. However, a TDS value cannot determine whether the dissolved solids in water are harmful, so water quality should not be judged by TDS value alone.
Q: What is the qualified TDS value for drinking water?
A: According to the Standards for Drinking Water Quality, the qualified TDS value is ≤1000 mg/L.
Related Terms
- TDS (Total Dissolved Solids): The total amount of dissolved solids in water, an indicator used to measure water purity.
- ppm: Parts per million, a unit expressing the concentration of dissolved solids in water. 1 ppm is approximately equal to 1 mg/L.
- mg/L: Milligrams per liter, indicating the number of milligrams of solute per liter of water, commonly used in water quality testing.
- Dissolved solids: A general term for minerals, salts, and other substances dissolved in water.
- Standards for Drinking Water Quality: Sanitary standards related to drinking water quality, stipulating that the qualified TDS value is ≤1000 mg/L.

